Elevator-guard



. (Noa Model.) f .n

N. LBVISON.

ELBVATOB. GUARD.

Patented Dec. 18, 1894.

m: Nenms PETERS' cn. wow-urna., wasmnnmn, uc.

platforms.

UNITED STATESI NORMAN LEVISON, 'OF ROCHESTER, N ElV YORK.

ELEVATOR-GUARD.

SPECIFICATION forming part of Letters Patent No. 531,198, dated December18,1894. Application iiled June 16,1894. Serial No. 514,818. (No model.)

To @ZZ whom #may concern; A

Be it known that I, NORMAN LEvIsoN, of Rochester, in the county ofMonroe and State of New York, have invented a certain new and usefulImprovement in Elevator-Guards; and I do hereby declare that thefollowing is a full, clear, and exact description of the same, referencebeing had'to the drawings accompanying this application.

My improvement relates to that class where the hatchways or openingsthrough the elevator shaft, opposite the various vlicore, are allclosed, as the car ascends or descends, by means of platforms, attachedto chains.

It also relates to means whereby said platforms when folded together'areseparated to such an extent as to prevent injury, in the'rise and fallof the car; to a person confined between them. A

It also relates to means whereby a signal is given in case a personfalls upon one of the The invention consists in the construction andarrangement of parts hereinafter de scribed and claimed. l

In th'e drawingsFigure lis a vertical section of an elevatorshaftexhibiting my invenof the shaft opposite each floor and obviating tion,and showing the car partially raised. Fig. 2 is an 'enlarged crosssection on line x as of Fig. l. Fig. 3 is a diagram showing a portion ofthree of the platforms in elevation, one being-raised and the other twofolded together. Fig. 4 is a sectionyof one corner of the car, showingthe signal attachment.

A indicates the elevator shaft or well and B the car resting therein,both of ordinary construction.

C C C C are the various floors of thebuild` ing, and a or, a a the doorswhich communicate with the shaft.

D D D are a'set of chains, cords, side of the car, the opposite ends ofthe chains hanging free; and D D D are similar platforms attached bychains E E E' to the ceiling of the .elevator shaft, hanging loosely andextending to the top of the car. The platforms are so spaced that whenthe car stops before the door of any door the'platforms rest oppositeall the other'ioors of the building, as shown in Fig. 1, thus closingthe passage platforms attached by or cables, E E E, to the under upwardas shown. 1 When the platforms are "6 o folded together one platformstrikes the stops of the next, and so on. By this meansthe platforms areall separated a given distance, which is sufficient to prevent injury toa person by crushing in case the elevator car should come in contactwith'the platforms 'when a person is so confined.

As shown inthe drawings the stops consist of cups or receptacles whichstand upward, and the chains are made in short sections attached at oneend inside the cups and at the opposite-end to vthe next platform.Instead of being made in short sections the chains may be made in'onecontinuous length. In the closing of the platforms together the chainsall fold into the cupsand are held in compact form, instead of beingspread loosely over the platforms. Th'e platforms themselves may be ofany suitable material and construction. As shown in the drawings eachconsists of a rectangular frame of sufticientsize to nearly fill thecrossarea of the hatchway, and a filling of net work. A frame with afilling of woven wire similar to that used in spring bed bottoms wouldbe-effective.

I is an alarm located in the bottom of the of the well, the design ofwhich is to sound an alarm in casca person falls on any one of theplatforms. The deviceshown in the draw ings consists of gongs, but anyother device may be used. One of the chains below the car is passed uploosely through the bottom of the car'and attached to a hinged arm p,and a spring 'r is interposed between the arm and the bottom of the car.In case a person falls on one side of the platforms below the car theextra weight depresses the platform, draws down the arm p against thespring, and trips the hammer s of the gong. The arrangement is the sameat the top of the well, except that the gong and the hinged arm areattached to the wel y The construction before described is such Scar,and I a similar alarm located in the top IOO that in case aperson fallsin the shaft his fall is arrested by a platform, and an alarm issounded, and in case the car ascends or descends to its full extent withthe person confined between the platforms, the stops on the platformsprevent danger of crushing.

Having described my invention, what I claim as new, and desire to secureby Letters Patent, :is-

l. In an elevator, the combination, with the car, of two sets of chains,one attached to the car and rising and falling With it, the otherattached to the well and rising and falling with the car, a set ofplatforms connected with the chains spaced to separate a distance equalto the distance between the floors, and cups attached to the platformsserving as stops to witnesses.

NORMAN LEVISON. Witnesses:

CHARLES F. MEYERING, R. F. OsGooD.

